Does F/R rotor diameter really matter? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Urbanizer · 09-22-2017, 04:08 PM

I recently had to replace my rotors and pads on my '10 SS and upgraded to a drilled and slotted rotors. I had them installed at a local brake shop, but didn't really specify where to install the larger diameter rotors. Since most cars have the larger ones up front that's how mine got installed.

What are the disadvantages I could experience if I kept them this way? Is it worth getting them swapped to match the OEM setup?

Synner · 09-22-2017, 05:33 PM

Disadvantages of having them installed correctly with larger rotor up front? That would be none.

SS Performance · 09-22-2017, 06:12 PM

I have never heard of having larger rotors on the rear, the front does the majority of the braking.

1Coopgt · 09-22-2017, 06:48 PM

Well considering that you can't put the rotors from the rear of the car on the front I think you'll be fine.

ChasperL99 · 09-23-2017, 08:04 AM

Quote:

Originally Posted by SS Performance

I have never heard of having larger rotors on the rear, the front does the majority of the braking.

Front rotor 355.2mm, rear 365mm. Rear is larger. However, like someone said, rear, has the e brake.

Synner · 09-23-2017, 09:37 AM

Weird, had ZL1 brakes too long. The rear pad and caliper is still much smaller. The parking brake takes up the extra space. It's not physically possible to reverse the install.

Urbanizer · 09-25-2017, 09:52 AM

Quote:

Originally Posted by ChasperL99

Front rotor 355.2mm, rear 365mm. Rear is larger. However, like someone said, rear, has the e brake.

Yea currently I have 365mm in the front and 355.2mm in the rear. I'm not sure if there pads/break pistons will be effected by this.

Additionally if the parking break is in the rear I don't want anything slipping because of a smaller than stock rotor there.

1Coopgt · 09-25-2017, 02:57 PM

Quote:

Originally Posted by Urbanizer

Yea currently I have 365mm in the front and 355.2mm in the rear. I'm not sure if there pads/break pistons will be effected by this.

Additionally if the parking break is in the rear I don't want anything slipping because of a smaller than stock rotor there.

That's not possible either . Your e-brake is a drum brake on a car from the 60's only simpler. If your e-brake slips it because it's not adjusted correctly or you didn't pull it up far enough.

Urbanizer · 09-25-2017, 03:28 PM

I wasn't aware of that, thanks for the clarification!

09-22-2017, 04:08 PM	#1
Urbanizer Drives: 2010 SS Join Date: Jan 2014 Location: United States Posts: 10	Does F/R rotor diameter really matter? I recently had to replace my rotors and pads on my '10 SS and upgraded to a drilled and slotted rotors. I had them installed at a local brake shop, but didn't really specify where to install the larger diameter rotors. Since most cars have the larger ones up front that's how mine got installed. What are the disadvantages I could experience if I kept them this way? Is it worth getting them swapped to match the OEM setup? Last edited by Urbanizer; 09-25-2017 at 12:18 PM.

09-22-2017, 06:12 PM	#3
SS Performance Drives: 02 Camaro B4C Join Date: Nov 2016 Location: Cape May County NJ Posts: 750	I have never heard of having larger rotors on the rear, the front does the majority of the braking. __________________ A man's garage is his castle 1969 Camaro SS 1970 Camaro SS 2002 Camaro B4C 2014 Camaro SS Dedicated Track Car 2015 Camaro 1SS 1LE 2008 HHR SS 1996 Silverado Crew Cab Long Bed Dual Rear Wheel

09-22-2017, 06:48 PM	#4
1Coopgt Drives: All Black 2012 1LS Join Date: Feb 2015 Location: Rochester,NY Posts: 2,042 View My Garage	Well considering that you can't put the rotors from the rear of the car on the front I think you'll be fine. __________________ Mods, K&N CAI ,VTC , GM Perf Axleback Exhaust, Elite Eng CC and CSS, GM Strut Tower Brace,Carbon Fiber Anvil Spoiler,ASC T5 Splitter,Gen5diy Foglight kit.

09-22-2017, 05:33 PM	#2
Synner Drives: cars Join Date: May 2011 Location: Oversneeze Posts: 4,544	Disadvantages of having them installed correctly with larger rotor up front? That would be none.

09-23-2017, 09:37 AM	#6
Synner Drives: cars Join Date: May 2011 Location: Oversneeze Posts: 4,544	Weird, had ZL1 brakes too long. The rear pad and caliper is still much smaller. The parking brake takes up the extra space. It's not physically possible to reverse the install.

09-25-2017, 03:28 PM	#9
Urbanizer Drives: 2010 SS Join Date: Jan 2014 Location: United States Posts: 10	I wasn't aware of that, thanks for the clarification!